lib/component/source.c

   1 /*
   2  * source.c
   3  *
   4  * Babeltrace Source Component
   5  *
   6  * Copyright 2015 Jérémie Galarneau <jeremie.galarneau@efficios.com>
   7  *
   8  * Author: Jérémie Galarneau <jeremie.galarneau@efficios.com>
   9  *
  10  * Permission is hereby granted, free of charge, to any person obtaining a copy
  11  * of this software and associated documentation files (the "Software"), to deal
  12  * in the Software without restriction, including without limitation the rights
  13  * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  14  * copies of the Software, and to permit persons to whom the Software is
  15  * furnished to do so, subject to the following conditions:
  16  *
  17  * The above copyright notice and this permission notice shall be included in
  18  * all copies or substantial portions of the Software.
  19  *
  20  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  21  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  23  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  24  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  25  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  26  * SOFTWARE.
  27  */
  28
  29 #include <babeltrace/ref.h>
  30 #include <babeltrace/compiler.h>
  31 #include <babeltrace/component/component-source-internal.h>
  32 #include <babeltrace/component/component-internal.h>
  33 #include <babeltrace/component/port-internal.h>
  34 #include <babeltrace/component/notification/iterator.h>
  35 #include <babeltrace/component/notification/iterator-internal.h>
  36
  37 BT_HIDDEN
  38 enum bt_component_status bt_component_source_validate(
  39                 struct bt_component *component)
  40 {
  41         enum bt_component_status ret = BT_COMPONENT_STATUS_OK;
  42
  43         if (!component) {
  44                 ret = BT_COMPONENT_STATUS_INVALID;
  45                 goto end;
  46         }
  47
  48         if (!component->class) {
  49                 ret = BT_COMPONENT_STATUS_INVALID;
  50                 goto end;
  51         }
  52
  53         if (component->class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
  54                 ret = BT_COMPONENT_STATUS_INVALID;
  55                 goto end;
  56         }
  57
  58 end:
  59         return ret;
  60 }
  61
  62 static
  63 void bt_component_source_destroy(struct bt_component *component)
  64 {
  65         struct bt_component_source *source = container_of(component,
  66                         struct bt_component_source, parent);
  67
  68         if (source->output_ports) {
  69                 g_ptr_array_free(source->output_ports, TRUE);
  70         }
  71 }
  72
  73
  74 BT_HIDDEN
  75 struct bt_component *bt_component_source_create(
  76                 struct bt_component_class *class, struct bt_value *params)
  77 {
  78         int ret;
  79         struct bt_component_source *source = NULL;
  80         enum bt_component_status status;
  81
  82         source = g_new0(struct bt_component_source, 1);
  83         if (!source) {
  84                 goto end;
  85         }
  86
  87         source->parent.class = bt_get(class);
  88         status = bt_component_init(&source->parent, bt_component_source_destroy);
  89         if (status != BT_COMPONENT_STATUS_OK) {
  90                 goto error;
  91         }
  92
  93         ret = bt_component_init_output_ports(&source->parent, &source->output_ports);
  94         if (ret) {
  95                 goto error;
  96         }
  97
  98 end:
  99         return source ? &source->parent : NULL;
 100 error:
 101         BT_PUT(source);
 102         goto end;
 103 }
 104
 105 BT_HIDDEN
 106 struct bt_notification_iterator *bt_component_source_create_notification_iterator(
 107                 struct bt_component *component)
 108 {
 109         return bt_component_create_iterator(component, NULL);
 110 }
 111
 112 BT_HIDDEN
 113 struct bt_notification_iterator *bt_component_source_create_notification_iterator_with_init_method_data(
 114                 struct bt_component *component, void *init_method_data)
 115 {
 116         return bt_component_create_iterator(component, init_method_data);
 117 }
 118
 119 int bt_component_source_get_output_port_count(struct bt_component *component)
 120 {
 121         int ret;
 122         struct bt_component_source *source;
 123
 124         if (!component) {
 125                 ret = -1;
 126                 goto end;
 127         }
 128
 129         if (component->class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
 130                 ret = -1;
 131                 goto end;
 132         }
 133
 134         source = container_of(component, struct bt_component_source, parent);
 135         ret = source->output_ports->len;
 136 end:
 137         return ret;
 138 }
 139
 140 struct bt_port *bt_component_source_get_output_port(
 141                 struct bt_component *component, const char *name)
 142 {
 143         struct bt_component_source *source;
 144         struct bt_port *ret_port = NULL;
 145
 146         if (!component || !name ||
 147                         component->class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
 148                 goto end;
 149         }
 150
 151         source = container_of(component, struct bt_component_source, parent);
 152         ret_port = bt_component_get_port(source->output_ports, name);
 153 end:
 154         return ret_port;
 155 }
 156
 157 struct bt_port *bt_component_source_get_output_port_at_index(
 158                 struct bt_component *component, int index)
 159 {
 160         struct bt_port *port = NULL;
 161         struct bt_component_source *source;
 162
 163         if (!component ||
 164                         component->class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
 165                 goto end;
 166         }
 167
 168         source = container_of(component, struct bt_component_source, parent);
 169         port = bt_component_get_port_at_index(source->output_ports, index);
 170 end:
 171         return port;
 172 }
 173
 174 struct bt_port *bt_component_source_get_default_output_port(
 175                 struct bt_component *component)
 176 {
 177         return bt_component_source_get_output_port(component,
 178                         DEFAULT_OUTPUT_PORT_NAME);
 179 }
 180
 181 struct bt_port *bt_component_source_add_output_port(
 182                 struct bt_component *component, const char *name)
 183 {
 184         struct bt_port *port;
 185         struct bt_component_source *source;
 186
 187         if (!component ||
 188                         component->class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
 189                 port = NULL;
 190                 goto end;
 191         }
 192
 193         source = container_of(component, struct bt_component_source, parent);
 194         port = bt_component_add_port(component, source->output_ports,
 195                         BT_PORT_TYPE_OUTPUT, name);
 196 end:
 197         return port;
 198 }
 199
 200 enum bt_component_status bt_component_source_remove_output_port(
 201                 struct bt_component *component, const char *name)
 202 {
 203         enum bt_component_status status;
 204         struct bt_component_source *source;
 205
 206         if (!component ||
 207                         component->class->type != BT_COMPONENT_CLASS_TYPE_SOURCE) {
 208                 status = BT_COMPONENT_STATUS_INVALID;
 209                 goto end;
 210         }
 211
 212         source = container_of(component, struct bt_component_source, parent);
 213         status = bt_component_remove_port(component, source->output_ports,
 214                         name);
 215 end:
 216         return status;
 217 }